Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «G»:

Genetic screeningGenetic screening: Testing a population to identify individuals
at risk for a genetic disease or for transmitting it. Newborns may be screened for PKU
(phenylketonuria), Jews for the gene for Tay-Sachs disease, Blacks for the sickle cell
gene, etc. ...

Genetic testingGenetic testing: Tests done for clinical genetic purposes. Genetic tests may be done for diverse purposes pertaining to clinical genetics, including the diagnosis of genetic disease in children and adults; the identification of future disease risks; the prediction of drug responses; and the detecti...

Genetic transformationGenetic transformation: A process by which the genetic material carried by an individual cell is altered by the incorporation of foreign (exogenous) DNA into its genome....

Genetic transport defectGenetic transport disease: Within the body, many molecules are able to pass across the membranes that surround cells. These molecules can accomplish this
feat due to specific transport systems. These systems include special receptors on the membrane of the cell and special carrier proteins. The re...

Genetic transpositionGenetic transposition: The ability of genes to change position on chromosomes, a process in which a transposable element is removed from one site and inserted into a second site in the DNA. Genetic transposition was the first type of genetic instability to be discovered.
This remarkable phenomeno...

GeneticsGenetics: The scientific study of heredity. Genetics pertains to humans and all other organisms. So, for example, there is human genetics, mouse genetics, fruitfly genetics, etc.
Human genetics today comprises a number of overlapping fields, including:
Classical or formal genetics -- the study of ...

Genetics, transplantationGenetics, transplantation: The field of biology and medicine relating to the genes that govern the acceptance or rejection of a transplant.
The most important genes deciding the fate of a transplanted cell, tissue, or organ belong to what is termed the MHC (the major histocompatibility complex). Th...

GenitalGenital: Pertaining to the external and internal organs of
reproduction. (Not to be confused with genetic.) ...

Genital herpesGenital herpes: A viral infection transmitted through
intimate contact with the moist mucous linings of the genitals. This contact can involve the mouth, the vagina or the genital skin. The herpes simplex type 2 (HSV-2) enters the mucous membranes through microscopic tears. Once inside the body, HSV...

Genital wartGenital wart: A wart in the moist
skin of the genitals or around the anus. Genital warts are due to
a human papillomavirus (HPV). The HPVs, including those that cause genital warts, are transmitted through sexual contact. HPV can also be transmitted from mother to baby during childbirth. Most peo...

GenitaliaGenitalia: The male and female reproductive
organs. The genitalia include internal structures such as the ovary, and external structures such as the penis. See also: Female organs of reproduction; Male organs of reproduction....